The Guardian is a towering abomination that stands at least twice the height of Sebastian Castellanos, and is comprised of the mutilated remains of various women murdered by Stefano Valentini, mostly their heads, each one wearing a different expression, with the central one facing forward and sporting a wide, maniacal grin. Its body is almost tree-like, with a large top half connected to its pelvis via a large spine, though how the creature maintains balance when it runs is not explained. The Guardian's right arm is equipped with a large buzzsaw blade which it uses to great effect against its victims.